1. Introduction
Thank you for choosing the HUMSURE 4500 Sq. Ft 70 Pints Dehumidifier. This appliance is designed to effectively remove excess moisture from large to medium-sized rooms, covering areas up to 4500 square feet, and extracting up to 70 pints of water per day. It is ideal for basements, bathrooms, bedrooms, closets, offices, apartments, garages, kitchens, laundry rooms, storage rooms, and RVs. Featuring a powerful compressor, smart temperature and humidity sensors, ultra-quiet operation, and an automatic defrost function, this dehumidifier helps create a healthier and more comfortable living environment.

2. Safety Information
Please read all safety instructions carefully before using the appliance to prevent injury or damage. Keep this manual for future reference.
- Always place the dehumidifier on a level, stable surface to prevent tipping.
- Ensure the power cord is not damaged and is properly plugged into a grounded outlet.
- Do not operate the unit near water or in excessively wet areas where it could be submerged.
- Keep children and pets away from the appliance during operation.
- Do not block the air intake or exhaust vents. Maintain at least 8 inches of clearance around the unit.
- Unplug the dehumidifier before cleaning, maintenance, or when not in use.
- Do not attempt to repair or disassemble the unit yourself. Contact qualified service personnel.
3. Product Overview
3.1 Components
- Control Panel (Top)
- Air Outlet (Top)
- Air Intake Grille (Rear)
- Water Tank (Bottom Front)
- Portable Handle (Top, retractable)
- Universal Wheels (Bottom)
- Drainage Hose Connection (Rear)

3.2 Features
- Efficient Dehumidification: Removes up to 70 pints of moisture per day, suitable for areas up to 4500 sq. ft.
- Smart Temperature & Humidity Sensor: Dual NTC probe for precise sensing.
- Intelligent Constant Humidity: Maintains desired humidity levels automatically.
- Ultra Quiet Technology: Operates at less than 40dB, ideal for bedrooms and offices.
- Automatic Defrost Function: Prevents icing and ensures continuous efficient operation.
- Multiple Operating Modes: Continuous, Dehumidify, Dry, Basement, Muted, Normal.
- Built-in Child Lock Function: Prevents accidental changes to settings.
- Anion Purification: Helps improve air quality.
- Manual and Continuous Drainage Options: Includes an 11.2-pint water tank and a 47-inch drainage hose for continuous use.




4. Setup
4.1 Unpacking and Initial Placement
- Carefully remove the dehumidifier from its packaging.
- Place the unit upright on a flat, stable surface in the desired location.
- Important: Before using the dehumidifier for the first time, let it stand upright for at least 2 hours. This allows the refrigerant pressure inside the system to balance, ensuring optimal performance and longevity.
- Ensure there is at least 8 inches (20 cm) of space around the air intake and exhaust vents for proper airflow.
4.2 Power Connection
- Plug the power cord into a grounded 120V electrical outlet.
4.3 Drainage Options
The dehumidifier offers two drainage methods: manual emptying of the water tank or continuous drainage using the included hose.
4.3.1 Manual Drainage
- The unit comes with a built-in 11.2-pint water tank.
- When the tank is full, the 'Tank Full' indicator light will illuminate, and an audible alarm will sound. The unit will automatically shut off.
- Carefully remove the water tank, empty the collected water, and reinsert the tank securely. The unit will resume operation.
4.3.2 Continuous Drainage
- For continuous operation without emptying the tank, attach the provided 47-inch drainage hose to the drainage outlet on the rear of the unit.
- Ensure the hose is sloped downwards to allow gravity to drain the water into a suitable drain (e.g., floor drain, sink). Do not allow the hose to kink or be elevated, as this will prevent proper drainage.
5. Operating Instructions
The control panel is located on the top of the unit for easy access.

5.1 Control Panel Functions
- Power Button: Turns the unit ON/OFF.
- Anion Button: Activates/deactivates the anion purification function.
- Timer Button: Sets the auto-on or auto-off timer (e.g., 24-hour operation).
- Lock Button: Activates/deactivates the child lock function.
- Humidity Setting (Up/Down Arrows): Adjusts the desired humidity level (RH%).
- Tank Full Indicator: Lights up when the water tank is full.
- Defrost Indicator: Lights up when the unit is in defrost mode.
- Mode Button: Cycles through different operating modes.
5.2 Operating Modes
Press the 'Mode' button to select from the following options:
- Continuous Dehumidification: Ideal for very damp environments. In this mode, humidity and fan speed cannot be manually selected.
- Dehumidify Mode: Allows you to set a target humidity level and adjust the fan speed according to your needs.
- Dry Mode: Specifically designed for drying clothes in humid conditions.
- Basement Mode: Provides continuous dehumidification, similar to Continuous mode, with fixed settings.
- Muted Mode: Operates at the lowest fan speed for ultra-quiet performance, suitable for bedrooms or quiet spaces.
- Normal Mode: Standard operation with adjustable humidity and fan speed.

5.3 Child Lock Function
To activate the child lock, press and hold the 'Lock' button for a few seconds. This will prevent accidental changes to settings by children. Repeat the action to deactivate.

5.4 Anion Purification
Press the 'Anion' button to activate the anion purification feature, which helps to clean the air by releasing negative ions.

5.5 Product Demonstration Video
6. Maintenance
6.1 Cleaning the Air Filter
The dehumidifier is equipped with a washable air filter. Regular cleaning is essential for maintaining efficiency and prolonging the unit's lifespan.
- Unplug the dehumidifier from the power outlet.
- Remove the air intake grille from the rear of the unit.
- Carefully remove the filter mesh.
- Wash the filter with warm, soapy water. Rinse thoroughly and allow it to air dry completely before reinserting.
- Reattach the filter mesh and the air intake grille.
6.2 Cleaning the Water Tank
If using manual drainage, clean the water tank periodically to prevent mold and mildew growth.
- Unplug the dehumidifier.
- Remove the water tank and empty any remaining water.
- Wash the tank with mild detergent and water. Rinse thoroughly.
- Allow the tank to air dry completely before placing it back into the unit.
6.3 Cleaning the Exterior
- Wipe the exterior of the dehumidifier with a soft, damp cloth.
- Do not use abrasive cleaners or solvents, as they may damage the surface.
7. Troubleshooting
If you encounter issues with your dehumidifier, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Dehumidifier does not turn on | No power; Water tank full or not properly inserted; Temperature too low. | Check power connection; Empty and reinsert water tank; Ensure ambient temperature is above 41°F (5°C). |
| No water collected | Humidity level too low; Air filter clogged; Room temperature too low; Unit in defrost mode. | Adjust target humidity lower; Clean air filter; Ensure room temperature is adequate; Wait for defrost cycle to complete. |
| Unit runs continuously | Target humidity not reached; Unit in Continuous or Basement mode; Room size too large. | Set a higher target humidity; Change mode to Dehumidify or Normal; Consider if the unit is appropriately sized for the space. |
| Loud noise during operation | Unit not on a level surface; Obstruction in fan; Loose parts. | Place on a level surface; Check for and remove any obstructions; Contact support if noise persists. |
| 'Tank Full' indicator is on, but tank is empty | Water tank not properly seated; Float switch malfunction. | Ensure tank is fully inserted; Contact support if issue persists. |
8. Specifications
| Attribute | Value |
|---|---|
| Brand Name | HUMSURE |
| Model Number | 801 |
| Coverage Area | 4500 sq. ft. |
| Capacity (pints / 24h) | 70 |
| Dimensions (L x W x H) | 15.75 x 11.57 x 25.39 inches |
| Water Tank Capacity | 11.2 Pint (approx. 5.3 L) |
| Dehumidification Volume | <1.1 L/h |
| Fan Speed | 2 |
| Voltage | 120V |
| Power (W) | <500W |
| Function | Automatic Defrost, Automatic Humidistat Control, External Drain Connect, Removable Water Tank, Washable Air Filter |
| Application Temperature | 31-40℃ |
| Hign-concerned Chemical | None |
| Origin | Mainland China |
9. User Tips
- Optimal Placement: For best results, place the dehumidifier in the center of the room or area you wish to dehumidify, away from walls and furniture that might obstruct airflow.
- Continuous Drainage: Utilize the continuous drainage hose for hassle-free operation, especially in basements or areas requiring constant dehumidification, to avoid frequent emptying of the water tank.
- Energy Efficiency: While the product's Energy Star rating is not specified, you can maximize energy efficiency by keeping doors and windows closed in the area being dehumidified and regularly cleaning the air filter.
- Child Safety: Always engage the child lock function when the dehumidifier is in an area accessible to children to prevent accidental changes to settings or power cycles.
10. Warranty and Support
Your HUMSURE Dehumidifier is backed by a manufacturer's warranty. For specific warranty details, please refer to the documentation included with your purchase or contact HUMSURE customer support.
If you experience any issues that cannot be resolved using the troubleshooting guide, or if you require further assistance, please contact HUMSURE customer support. Please have your model number (801) and purchase information ready when contacting support.





